I find that surprising are you sure the cotton just isn't smooth feeling? Try scrubbing with a baking soda and soap paste or maybe a oxygen bleach paste. (or detergent paste). I bet if a tide user showed up they would say wash in Tide. umm...

It is so strange, but I can definitely smell and feel oil on the diapers. The seller said it was oil from wipes solution, but the diapers are saturated in it, like they had been soaked in an oil solution. Very strange.
I am determined to get them clean, tho, and will so whatever it takes. Sounds like I should try scrubbing them.